Maternal care for excess fetal growth, second tri, fetus 3

This code signifies ongoing maternal medical management and surveillance during the second trimester of pregnancy due to a fetus exhibiting excessive growth (macrosomia or large for gestational age). This condition increases the risk of complications such as shoulder dystocia, birth trauma, and neonatal hypoglycemia.

Apply this code when documentation indicates maternal care specifically addressing a fetus with confirmed or suspected excessive growth during the second trimester. This typically follows ultrasound findings demonstrating fetal biometry significantly above the 90th percentile for gestational age, or a clinical suspicion based on fundal height measurements.

• Ensure the medical record explicitly states "second trimester" and identifies the "third fetus" if applicable in a multiple gestation.
• Distinguish from codes for suspected fetal macrosomia (O36.60-) if excessive growth is confirmed.
• Sequence as a secondary diagnosis when the primary reason for the encounter is another maternal condition or routine prenatal care.